| abstract |
Ethylene-based polymers comprising the following properties: (A) a density from 0.9190 g/cc to 0.9240 g/cc; (B) a hexane extractable level that is less than or equal to the lower of: (1) (A+(B*density (g/cc))+(C* log(MI) dg/min)) based on total weight of the ethylene-based polymer; where A= 250.5 wt%, B = -270 wt%/(g/cc), C = 0.25 wt%/[ log(dg/min)], or (2) 2.0 wt%; (C) a G' (at G" = 500 Pa, 170°C) that meets the following equation: G' ≥ D + E[log (12)], where D = 150 Pa and E = -60 Pa/[log(dg/min)]; and (D) a melt index (12) from 1.0 to 20 dg/min; are made in process comprising the step of contacting in a reaction configuration, comprising a first tubular reaction zone 1 and a last tubular reaction zone i, in which i is greater than or equal to (≥) 3, under high pressure polymerization conditions, and in which the first reaction zone 1 has a peak polymerization temperature greater than the peak temperature of the ith reaction zone, and wherein the difference in these two peak temperatures is ≥ 30°C. |